UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549


                                    FORM 8-K


                             Current Report Pursuant
                          to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934



   Date of report (Date of earliest event reported):         June 24, 2005


                               KEYSPAN CORPORATION
                               -------------------
             (Exact Name of Registrant as Specified in Its Charter)


                                    New York
                                    --------
                 (State or Other Jurisdiction of Incorporation)


        1-14161                                           11-3431358
(Commission File Number)                       (IRS Employer Identification No.)
- ------------------------                       ---------------------------------

175 East Old Country Road, Hicksville, New York            11801
  One MetroTech Center, Brooklyn, New York                 11201
  (Address of Principal Executive Offices)               (Zip Code)

                           (631) 755-6650 (Hicksville)
                            (718) 403-1000 (Brooklyn)
                            -------------------------
              (Registrant's Telephone Number, Including Area Code)


                                       N/A
          (Former Name or Former Address, if Changed Since Last Report)





Cautionary Language Concerning Forward-Looking Statements
- ---------------------------------------------------------

     Certain statements contained herein are forward-looking  statements,  which
reflect  numerous  assumptions  and  estimates and involve a number of risks and
uncertainties.  For these statements, we claim the protection of the safe harbor
for  forward-looking  statements  provided by the Private Securities  Litigation
Reform Act of 1995.

     There are  possible  developments  that could  cause our actual  results to
differ  materially  from  those  forecast  or  implied  in  the  forward-looking
statements.   You  are   cautioned   not  to  place  undue   reliance  on  these
forward-looking  statements,  which  are  current  only  as of the  date of this
filing.  We  disclaim  any  intention  or  obligation  to update  or revise  any
forward-looking  statements,  whether  as a result  of new  information,  future
events or otherwise.

     Among the factors that could cause actual results to differ materially are:
general  economic  conditions,   especially  in  the  Northeast  United  States;
available sources and cost of fuel; volatility of energy prices in a deregulated
market  environment  as well as in the  source of  natural  gas and fuel used to
generate  electricity;  potential  write-down  of our  investment in natural gas
properties  when  natural  gas prices are  depressed  or if we have  significant
downward  revisions  in our  estimated  proved gas  reserves;  federal and state
regulatory  initiatives that increase competition,  threaten cost and investment
recovery,  and impact rate  structures;  our ability to successfully  reduce our
cost structures; implementation of new accounting standards; the degree to which
the we develop  unregulated  business  ventures;  as well as  federal  and state
regulatory  policies  affecting our ability to retain and operate those business
ventures; our ability to identify and make complementary  acquisitions,  as well
as the successful  integration of those  acquisitions;  inflationary  trends and
interest rates; and risks detailed from time to time in reports filed by us with
the Securities and Exchange Commission.


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Item 1.01         Entry into a Material Definitive Agreement
- ---------         ------------------------------------------

     On June 24, 2005,  KeySpan  Corporation  ("KeySpan")  entered into a Credit
Agreement,  dated as of June 24, 2005 (the "Credit  Agreement"),  among  several
banks and other financial institutions from time to time that are a party to the
Credit Agreement (the  "Lenders"),  The Royal Bank of Scotland plc and Citibank,
N.A.,  as  Co-Syndication  Agents,  The  Bank of New  York  and The Bank of Nova
Scotia,  as   Co-Documentation   Agents,  and  JPMorgan  Chase  Bank,  N.A.,  as
Administrative  Agent. This Credit Agreement  replaced an existing $660 million,
three year credit facility which was originally due June 2006.

     Pursuant to the Credit  Agreement,  the Lenders committed to make revolving
credit loans to KeySpan from time to time in the aggregate  principal  amount of
up to $920 million. Subject to the conditions set forth in the Credit Agreement,
KeySpan has the right to increase the commitments  under the Credit Agreement by
an  aggregate  amount  not to exceed an  additional  $300  million.  The  Credit
Agreement has a five year term and has an initial termination date of June 2010.
However, the Credit Agreement may be extended for one year renewal periods.

     On June 24, 2005,  KeySpan also entered into an Amended and Restated Credit
Agreement,  dated  as of  June  24,  2005  (the  "Amended  and  Restated  Credit
Agreement"),  among the Lenders,  The Royal Bank of Scotland  plc and  Citibank,
N.A.,  as  Co-Syndication  Agents,  The  Bank of New  York  and The Bank of Nova
Scotia,  as   Co-Documentation   Agents,  and  JPMorgan  Chase  Bank,  N.A.,  as
Administrative  Agent to the credit  agreement  dated as of June 30,  2004 among
KeySpan,  ABN Amro Bank N.V. and Citibank,  N.A., as  Co-Syndication  Agents and
JPMorgan Chase Bank,  N.A., as  Administrative  Agent.  The Amended and Restated
Credit  Agreement has a five year term based on its original  effective  date of
June 30, 2004 and  therefore has an initial  termination  date of June 30, 2009,
which may also be extended for one year  renewal  periods.  The original  credit
agreement was amended by the Amended and Restated Credit Agreement  primarily to
reduce the facility fees  thereunder  and provide for the ability to extend such
agreement for one year renewals.  The Amended and Restated Credit Agreement also
resulted in a reduction of the amount  available  under the  facility  from $640
million to $580 million and a change in certain agents thereunder.

     Copies  of the  Credit  Agreement  and  the  Amended  and  Restated  Credit
Agreement  (collectively the "Credit Facilities") are included in this report as
Exhibits  4.1 and 4.2,  respectively.  The terms of the  Credit  Facilities  are
substantially  similar,  except  in the  amounts  available  under  such  Credit
Facilities,  the facility fees and the initial termination dates. Therefore, the
description  of the material terms that follows is applicable to both the Credit
Agreement and the Amended and Restated Credit Agreement, but is qualified in its
entirety by  reference  to the Credit  Agreement  and the  Amended and  Restated
Credit Agreement.

     The Credit  Facilities  include  customary  terms and conditions  generally
associated  with  such  types  of  agreements.  The  Lenders  under  the  Credit
Facilities have severally  agreed to make revolving credit loans to KeySpan from
time to time up to the amount of each Lenders  commitment  under the  respective


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credit  facility.  The loans may be Eurodollar  loans,  ABR loans or competitive
loans as determined by KeySpan. KeySpan intends to use the Credit Facilities for
general corporate  purposes  (including  commercial paper back-up  liquidity) of
itself and its subsidiaries in the ordinary course of business.

     KeySpan will pay to the Administrative Agent for the account of each Lender
a facility fee for the period from and  including  the Closing Date until all of
the  obligations  have been  repaid and the  commitments  have been  terminated.
Payment is quarterly in arrears on the last day of each March,  June,  September
and December and on the termination date. The facility fee is based on KeySpan's
current rating on its senior unsecured long-term debt issued by Moody's Investor
Service,  Inc. and Standard and Poor's Rating Service.  The facility fee changes
upon the  effective  date of any changes in such ratings.  JPMorgan  Chase Bank,
N.A.  also  receives  fees for its  services as  Administrative  Agent under the
Credit Facilities.

     If an event of default under the Credit  Facilities (an "Event of Default")
occurs  then the  Lenders  may  terminate  their  commitments  under the  Credit
Facilities and declare the loans (including  accrued  interest)  immediately due
and payable.  Events of Default include failure to pay any principal or interest
on any loan  under the Credit  Facilities  within  five days  after such  amount
becomes  due; if any  representation  or warranty  made or deemed made under the
Credit Facilities shall prove to have been inaccurate in any material respect on
or as of the  date  made  or  deemed  made;  other  defaults  under  the  Credit
Facilities which remain unremedied for 30 days after notice to KeySpan;  failure
of KeySpan to maintain its ratio of  Consolidated  Indebtedness  to Consolidated
Capitalization  as at the  last day of any  fiscal  quarter  from a level  below
0.65:1.00;  creating,  incurring  or  assuming a lien upon any of KeySpan or its
Significant  Subsidiaries  properties,  whether now owned or hereafter acquired,
except for those expressly permitted; the merging, consolidating,  amalgamating,
liquidating, winding up or dissolving, or disposing of, all or substantially all
of KeySpan or its  Significant  Subsidiaries  property or  business,  except for
certain  permitted  transactions  and  corporate   reorganizations;   and  other
customary events of default.

     If  KeySpan  or one of its  Significant  Subsidiaries  commenced  an action
relating to  bankruptcy,  insolvency,  reorganization  of its debt or sought the
appointment  of a receiver or trustee over its assets,  or such a proceeding was
commenced  against  KeySpan,  or  its  Significant  Subsidiaries,  or if  one of
KeySpan's  subsidiaries  commenced  such a  proceeding  or such  proceeding  was
commenced against such subsidiary and such proceeding was reasonably expected to
have a Material  Adverse  Effect,  then the  commitments and any loans under the
Credit Facilities would automatically become due and payable immediately.

     KeySpan has customary banking relationships with JPMorgan Chase Bank, N.A.,
which  serves as the  Administrative  Agent under the Credit  Facilities.  Among
other  services,  JPMorgan Chase Bank provides  KeySpan with cash management and
credit  services,  including  payroll  account,  lockbox,  foreign  exchange and
investment  custody  account  services.  JPMorgan  Chase Bank also serves or has
served as  administrative  agent and trustee with respect to other  issuances of
debt by KeySpan and its  subsidiaries.  In addition,  Chase  Securities Inc., an
affiliate  of JPMorgan  Chase  Bank,  acts as a  placement  agent for  KeySpan's
commercial paper program.


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     The foregoing  summary of the Credit Agreement and the Amended and Restated
Credit  Agreement is  qualified in its entirety by reference to such  agreements
which are filed  herewith as  Exhibits  4.1 and 4.2 and  incorporated  herein by
reference.

     A copy of a press release announcing the Credit Facilities is also attached
hereto as Exhibit 99.1 and incorporated herein by reference.



Item 1.02         Termination of a Material Definitive Agreement
- ---------         ----------------------------------------------

     KeySpan, several lenders, Citibank, N.A., as Syndication Agent, The Bank of
New York and the Royal Bank of Scotland  plc, as  Co-Documentation  Agents,  and
JPMorgan Chase Bank, as Administrative Agent were parties to a three year credit
agreement dated as of June 27, 2003 for $660 million.  This credit agreement has
been  terminated  and replaced with the $920 million five year Credit  Agreement
disclosed in Item 1.01.  above.  The disclosure  under Item 1.01 is incorporated
herein by reference into this Item 1.02.



Item 2.03         Creation of a Direct Financial Obligation or an Obligation
- ---------         under an Off-Balance Sheet Arrangement of a Registrant
                  -----------------------------------------------------------

     The information set forth under Item 1.01 above is hereby incorporated into
this Item 2.03 by reference.


Item 9.01         Financial Statements and Exhibits
- ---------         ---------------------------------

         (c) Exhibits.

          4.1  Credit  Agreement  dated as of June 24, 2005 among  KeySpan,  the
               Lenders,  The Royal Bank of Scotland plc and  Citibank,  N.A., as
               Co-Syndication  Agents, The Bank Of New York and The Bank Of Nova
               Scotia,  as  Co-Documentation  Agents,  and JPMorgan  Chase Bank,
               N.A., as Administrative Agent

          4.2  Amended and Restated Credit  Agreement dated as of June 24, 2005,
               among  KeySpan,  the Lenders,  The Royal Bank of Scotland plc and
               Citibank,  N.A., as Co-Syndication  Agents,  The Bank Of New York
               and The Bank Of Nova  Scotia,  as  Co-Documentation  Agents,  and
               JPMorgan Chase Bank, N.A., as Administrative Agent.

          99.1 Press Release of the Company dated June 28, 2005.


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                                   SIGNATURES


     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


                                              KEYSPAN CORPORATION

Dated: June 29, 2005                          By:  /s/ John J. Bishar, Jr.
                                                   -----------------------
                                                   John J. Bishar, Jr.
                                                   Executive Vice President,
                                                   General Counsel & Chief
                                                   Governance Officer






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                               INDEX TO EXHIBITS
                               -----------------




Exhibit No.    Exhibit                                                                 Page
- -----------    -------                                                                 ----
                                                                                  
4.1            Credit  Agreement  dated as of June 24, 2005 among  KeySpan,  the         8
               Lenders,  The Royal Bank of Scotland plc and  Citibank,  N.A., as
               Co-Syndication  Agents, The Bank Of New York and The Bank Of Nova
               Scotia,  as  Co-Documentation  Agents,  and JPMorgan  Chase Bank,
               N.A., as Administrative Agent

4.2            Amended and Restated Credit  Agreement dated as of June 24, 2005,        61
               among  KeySpan,  the Lenders,  The Royal Bank of Scotland plc and
               Citibank,  N.A., as Co-Syndication  Agents,  The Bank Of New York
               and The Bank Of Nova  Scotia,  as  Co-Documentation  Agents,  and
               JPMorgan Chase Bank, N.A., as Administrative Agent.

99.1           Press Release of the Company dated June 28, 2005.                       114









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